Duplex eyeleting machine



G. W. JACQUES; DUPLEX EYELETING MACHINE.

APPLICATION FlLED'!AN-13,l920.

Patented. Aug. 8, 1922 ATTORNEY R O T N E V N GEORGE W. JACQUES, 0F STRATFCR-D, CONNECTICUT, ASSIGNOR 'IO THE SING-ER MANUFACTURING COMPANY, OF ELIZABETH, NEW JERSEY, A CORPORATION OF NEW JERSEY.

DUPLEX EYELETIN'G liIACHIN Specification of Letters Patent.

Patented Aug. 8, 11922;

Application filed January 13, 1920. SerialNo. 351,188.

To all whom it may concern Be it known that l, Gnonen W. JACQUES, a citizen of the United States, residing at Stratford, in the county of Fairfield and State of Connecticut, have invented certain new and useful improvements in Duplex Eyeleting Machines, of which the iollow ing is a specification, reference being had therein to the accompanying drawings.

In fastener setting machines or the duplcz: type designed to set a pair of "fasteners in mating pieces of material simultaneously, it has been proposed to employ a pair of telescopically arranged hollow punches and sets cooperating with opposite ends of a central combined anvil and set allowing the p nnchings to be forced through the length of the punches where they may escape In some cases the packing of the punchings has caused a severe stress on the punches tending to burst them, and the punchings often cs-ape from the punch ends at intervals in masses, causing discharges at the upper punch end, of sutiicicnt violence near the operators eyes to be annoying.

This invention has been more particularly designed to eliminate these objections, while at the same time securing other advantages applicable to machines of this type as well as to other machines involving similar functions. To this end a hollou double-ended punch and set element has been substituted for the anvil and set in the machineabove described, and solid end relatively movable punch elements have been substituted for the hollow punches so that the punchings will be forced into the central double-ended punch element.

Means comprising a sprang-pressed plunger carried by the upper punch element is also provided for ejecting the punchings from the lower end of the double-ended punch and set and away from the operator on the re traction of the lower movable punch element.

Further objects and advantageous combinations and details of construction contemplated by this invention and applicable to fastener setting, punching or other machines will appear from a more complete description oi? embodiments thereof disclosed in the accompanying drawings in which,-

F 1 is a fragmentary view partly in section of a duplex eyeleting machine constructed according to this invention showing the parts in one position in their cycle of operations 2 and 3 are fragmentary elevations partly in section showing the parts in other positions in their cycle;

Fig, e'i is a detail showing modified forms of punching elements; and

Fig. 5 is a cross section of one form of certain punching elements showing the ching ejector, the parts being in the position illustrated in Fig. 3.

"A represents a portion of the feed frame of a duplex eyeleting machine such as is disclosed in the application of Eames 8: Jacques, Serial No. 199,498, filed Oct. 31, 1917, this feed frame being in the form of a pivoted ver A by a cam acting in time with the punching and setting instr-umentalities to be described. At its outer end lever A is provided with aligned bearings 4 and 45 for the reception sliding sleeves 5, 5 the adjacent ends of these sleeves having threaded therein hollow sets 6, 6 slidably carrying therein punch elements 7, 7 terminating at their non-adjacent ends as shown at 8 in enlarged heads.

lz lidablymounted within sleeve 5 is a plunger 0 having a head 10 at its lower end arranged to contact with the head 8, the sleeve 5 being counter-bored at 11 to provide an enlarged passage for sliding movement of the heads 8 and 10. A coil spring 12 sur rounding tne rod 9 and abutting at opposite ends against the end of the counter-bore 11 and head 10 serves to hold the plunger 9 at its downward limit of motion to project the punch element 7 to its extreme outward position relative to the set 6. The punch 7' is similarly mounted within the sleeve 5 Sleeves 5 and 5 are normally held in retracted position by means of arms 13, 13 engaging under enlarged heads 14, let of sleeves 5 and 5, the levers 13, l3 being urged outwardly by spring-pressed pins 15, 15. A support 16 fixed to the frame A carries 13" between the adj aeent ends of sleeves 5, 5"".

a double-ended punch and set element 18 and cooperating withthe respective ad- I jacent punch elements 7 and 7. Element 17 may be carried by the support 16 in the manner shown in the application above mentioned by means of fins on support 16 engaging opposite sides of a peripheral groove in the ,member 17. Mounted adjacent the punches 7 and 7 and in position at suitable times to deliver eyelets thereto are the eyelet raceways 20,20 which may be actuated in time with the. punching and setting elements in the manner disclosed in the above mentioned application.

-For imparting the punching and set movements to the respective elements, hammers 2-1 and 21 similar to. those shown in the above mentioned application, may be em ployed. As there disclosed, each hammer comprises a portion 22 adapted to contact at-certain times with the end of the plunger 9 and spaced members 23, 24L arranged to contact'with the enlarged head 14' of the sleeve member. These hammers are designed to be actuated by cams in the manner shown in the aforesaid application.

As shown also in Fig. 5, the, upper punch member 7 is provided with a bore 25 counterbored at 26 to receive the. head 27 of an ejecting plunger 28. slidable within the bore 25. A spring 29" bears at one end against the head 27 and at its other end against a threaded plug 30- adjustable in the upper en-df of the cou'nterbore 26. The. lower punch element'lf is solid, and is provided with a reduced extremity toenter the die portion 1 9 inmember 17,, a similar reducedextreme it-y being formed on the punch 7 to'cooperate with the die portion 19.

The operation of this mechanism is as follows: As shown, two pieces of material to be operated upon are inserted in the machine, one on either side of the member 17.

On starting the machine, the hammers 21,

21 swing toward each other, the feed element A at this time being positioned relatiy jthereto so that .the plungers 9, 9. are engaged thereby, thus forcing the punch elements 7? toward. the member 17. On

apreliminary motion of the punch. elements 7 and, towardeach. other, the eyelet raceways, 20,, 20".- are in. position to present eyelets to the. punch. elementswhich pass-therethrough. The raceways, are then caused to retract in. a. manner well known. inthe art, leaving one eyelet threaded on each punch element. When the punching e ector 28 strikes the surface offthe, upper piece of.

material, further'motion; of the member 21 in, a direction} to. force punch. element 7 downwardly, causes member 28 to be retracted against the pressure of spring 29.

Further motion of the punchelements 7, 7 causes them to punch the two pieces of material'against the die 17 forcing the punchings within the bore18 thereof.

When th punches are engaged in the work, the feed cam then operates through link 3 to swing the frame A so that the plungers 9, 9 are moved out of contact with their respective engaging faces of the hammers 21, 21 so that they are now free to retract within the hammer heads between the set-actuating elements, such as are shown at 23 and 2 1-. The spring 12, however, causes the punches to remain in.con-

tact with member 17. Hammers 21, 21 are then further depressed to force the sleeves 5, 5 toward each other whereupon the eyelets are forced through the holes punched in the material and are clenched between the sets 6 and 6 and the clenching surfaces of member 17, the punchelements 7 and 7 a retracting meanwhile within the sets. The hammers 21, 21 are thereupon retracted allowing the spring pins 15, 15 to retract the sleeves 5, 5 and with them the sets 6, 6". As soon. as the punch} heads, as shown at 8, 'are contacted by the ends of the sets the punch elements 7 and 7 also begin to retract, the parts, however, being so timed that the punch element 7 begins to retract somewhat before the punch element 7. Assoon as the punch element 7 is retracted sufiiciently, the plunger 28 under compression of spring 29 forces the punchings downwardly and out of the remote or lower end of the bore 18. Immediately thereafterthe punch element'7 is also retracted and the frame A is. then sw-ungto its original position. for a repetition of the same cycle of operations.

In. Fig. 4 is. shown a modified and preferred: construction. of punch elements .in

which. the central double-ended element. 17

is. provided .insteadl'of die portions with cutting. edges 19, 19 surrounding, the central perforation 28, the cooperating punch.- ingrelements in. this case being anvil members, the upper one only being shown in this figure. This anvil member r is. slight 1y larger in diameter than the mating cut.- ting edge 19",. and carries a punching ejector 28" mounted. and operating in the same manner as the ejector 28.. Anvil 7 is dc.- signed t be mounted telescopically within. the set 6 in the same manner as punch element 7, and a similar anvil member, except that it. is notprovided with a punching ejector is designed to be substituted for the punch. element 7 being. telescopically mounted in the set The cycle of oper ations, for this mechanism is the same as aforenotechexoept that. the cutting is done by the central element 17 instead of by the cooperating punch and. die. elements, the punchings being forced into the bore 18" and thereafter ejected through the lower end of the member 17 by means '01" the ejector 28'.

The term punching element as used in this specification and claims is used to defignate not only a punch having cutting edges but also the cooperating anvil or die member. It should be noted that the 1)Lll1l1 ings are ejected after the feed and the setting of the fasteners and in a downward direction away from the operator where they can cause no annoyance.

Having thus described certain embodiments of this invention, though it is evident that it is not limited thereto but may be embodied in other forms and with many modifications, what is claimed is,-

1. In a machine of the class described, a hollow double-ended punch element, punch elements cooperating with opposite ends of said hollow element to punch a plurality of pieces of material and force the punching; into said hollow element, and means controlled by said cooperating punch elements for ejecting the punchings from said hollow element.

2. In a machine of the class described, a hollow double-ended punch element, punch elements movable toward and from opposite ends of said hollow element to punch a plurality of pieces of material and force the punchings within said hollow element, and means carried by one of said movable elements for ejecting the punchings from said hollow element.

3. In a machine of the class described, a hollow double-ended punch element, punch elements movable toward and from the opposite ends of said hollow element to punch two pieces of material, and force the punchings within said hollow element, and means acting on the withdrawal of one of said movable elements toeject the punchings from one end of said hollow element.

4. In a machine of the class described, a hollow double-ended punch element, punch elements movable toward and from the opposite ends of said hollow lement to punch two pieces of material and force the punchings within said hollow element, and means carried by one of said movable elements for ejecting the punchings from the remote end of said hollow element on withdrawal of the other movable element.

5. In a machine of the class described, a double, open-ended punch element, punch elements movable toward and from the opposite open ends of said double element to punch two pieces of material and force the punchings in opposite directions into said double element, and an ejector for forcing both punchings out from one end of said double element.

6. In a machine of the class described, an open double-ended punch element, punch elements movable toward and from the open ends of said open element to punch two pieces of material and force the punchings within said open element, and a springpressed plunger carried by one of said movable elements in position to project within said open element to eject the punchings from said open element on the withdrawal of the other movable element.

7. In a fastener setting machine, an open double-ended combined punch and set element, a telescopically arranged punch ele ment and set element movable toward and from each end of said open element and arranged at each cycle of operations to punch material and force the punchings into said open element and thereafter. to set a fastening in the material punched, and. means for ejecting the punchings made at both ends of said open element after the :lastenings have been set.

8. In a fastener setting machine, a hollow double-ended combined punch and set, a telescopically arranged anvil and set cooperating with each end of said punch and set to punch material and force the punchings within the punch and to set a fastener in the material punched, and an ejector element carried by one of said anvils for forcing the punchings out of the remote end of said punch on the retraction of the other of said anvils.

9. In a fastener setting machine, a hollow doubled-ended combined cutting punch and set, a, telescopically arranged anvil and set cooperating with each end of said combined punch and set, means acting to move said anvils against the ends of said combined punch and set to punch material placed therebetween and force the punchings into the hollow of said punch and set, then to press the telescopic sets toward said combined punch and set to set a fastener in each hole punched, then to retract said telescopic sets and then to retract said anvils, and a spring pressed ejector carried by one of said anvils and acting to force the punchings out from the remote end of said combined punch and set on the retraction of the other of said anvils.

10. In a machine of the class described, a feed frame, a hollow double-ended punch element carried thereby, punch elements carried by said feed frame and cooperating with opposite ends of said double-ended punch element to punch a plurality of pieces of material and force the punchings into said double-ended punch element, means to move said frame while the punch elements engage the work whereby to feed the work, and means for ejecting the punchings from said double-ended element.

11. In a-maohine of the class described, a hollow double-ended punch element, a pair of punch elements one cooperating with each and means for ejecting the punching from 15 the hollow element. 7 i 13. In a machine of the class described, a hollow double encled cutting punch, and an anvil cooperating with each end of said punch to force a plurality of pieces of ma terial against said punch to punch the same and force the punchings within said punch, and means carried by one of said anvils for ejecting the punchings.

14. In a machine of the class described, a hollow double-ended cutting punch, an anvil cooperating with each end of said punch to force a plurality of pieces of material against said punch to punch the same I and force the punchings within said punch, and means for ejecting both punchings from one end of said punch.

15. In a fastener setting machine, a hollow double-ended combined cutting punch and set, a pair of anvils andsets telescopically arranged, one such anvil and set cooperating witheach end of said hollow punch and set to punch two pieces of material and force the punchings within said hollow punchand set, and then to vset fasteners in said materials, and a spring-pressed element carried byone of said anvils and arranged to eject the punchings from said hollow punch and set on the retraction of the other of said anvils.

16. In a fastener settingmachinaa feed 1 frame, a hollow double-ended punch and set element carried byisaid frame, a punch ele ment and a set element telescopically arranged on said feed frame to cooperate with each end of said double-ended element, means acting on the telescopic punch and. set ele-v ments to punch a plurality'of pieces of ma terial and'force the punchingswithin said double-ended element and then to set fasteners in the material, means acting to move said frame to feed both pieces ,of work during GIIP'iLQGIIlGDt of said elementstherewith, and

means for ejecting the punchings from said double-ended element after the feed has taken place. i i v 17. A machine of the class described comprising punching elements working each op;

positely to the other and cooperating to punch a plurality of pieces of materialsubstantially simultaneously, and means for ejecting the punchings 'from said pieces of material downwardly.

In testimony whereof, name to this soecifieation'.

noses w JACQUES.

I have signed my 

